Out here in the West they sell all the flavored Torani syrups in any grocery store. I dunno how it is back in NY though
Here you can also buy small packets of espresso for use in espresso machines just in the regular ol' Safeway (all brands, from Peets to Seattle's Best to Starbucks). I would presume that since we have such a prevalent "coffee culture" out here that everything fancy-dancy espresso related is more available here.
A side note: on Torani's website you can find links to several online retailers that sell the syrups.